Intel X520-DA2 10Gb 10Gbe 10 Gigabit Network Adapter NIC Dual Port

Have sold 1000s of these cards and know X520s more than most on Ebay. So definitely read below for good X520 info! No Fakes Period. Both brackets included.
The Intel version X520-DA2 is much more compatible(They have the genuine Intel boot code while the Dell X520's use a modified firmware version more tuned to their Poweredge Servers and Lifecycle Controller, while the HP versions report differently to the OS and use different firmware too) than cheaper Dell or HP versions of the X520! We do not sell anything counterfeit and stand behind the cards. These work great in Dell and HP too. We also solve the problem with X520's hanging upon boot up with certain motherboards!
All ports tested day cards go out and unlike most any other Ebay seller, we also update the Intel boot code to the latest Combo PXE / UEFI version, not as easy as you think and make these the most compatible version of these cards around!
Pulled in good working order from retired servers from a multi billion dollar company. No broken clips / heatsinks etc!
Some servers(especially SuperMicro / Synology / Lenovo / HP) do not like the Dell or HP versions where this real Intel made version does work great in them. These significantly better Intel's work perfectly fine in Dell/HP/Lenovo also. The real Intel 82599 / 82599ES chipset of the cards also tends to be more supported and trouble free than the Intel X710-DA2 + in many applications.
This card is for use with SFP Optics or Direct Attach Cable/DACs, it is not a RJ45 10G-BaseT Copper Card.
Works with any brand 10Gb SPF+ DAC / Direct Attached Cable & 1Gb SX / LX SFP GBIC optics. For 10Gb SFP+ SR / LR Optics, Intel branded is recommended.(Sometimes other brands work fine & we can help with workarounds for certain OS's but we can not guarantee if not using Intel 10gb transceivers ie E10GSFPSR, E10GSFPLR), we have plenty of them for sale if you need so feel free to message.
Any seller that tells you the Dell/HP version and the Intel version of the X520 are the same is either lying or does not know what they are really selling. We do know having sold 1000s of these E10G42BTDA .
Ships from U.S.A. We also can ship via Ebay's International Shipping Program no problem.
Intel X520-DA2 with low & full/regular/high profile brackets included.  Not cheap China copies from questionable companies, but 100% made by Intel with fully updated code from Intel's site. As you can see we have sold thousands with no complaints of counterfeit, we do not sell fakes period!
Works in any brand server and since is 100% made by Intel uses the regular Intel X520 drivers available on Intel's Site. Driver is included natively with Windows Server 2012+, Ubuntu, Linux etc also since they all have X520 82599 ES82599 drivers built in now.
90 Day DOA warranty with 100% refund or advanced replacement(Your choice) if sometime happens to go wrong.
Specs for Intel X520-DA2Host Interface: PCI ExpressInterfaces/Ports: 2 x SPF+ Duplex Network Technology: 10GBase – 10 Gigabit EthernetCard Height: One full/regular/high profile bracket included and one low profile bracket tooForm Factor: InternalDimensions: 5.73' WidthGreen Compliance: YesGreen Compliance Certificate/Authority: RoHS Picture is of one of the actual items! 
Terms: Have 5000+ Feedback So Buy with Confidence---Specs believed to be accurate but please check with manufacturer to be sure.--FREE Shipping/Handling via USPS/Fedex/UPS(Our Choice) to United States.(Others will cost additional $)--Delivery signature required for all shipments over $500(Included free in S&H)--International shipping available via eBay International Shipping. Message about other possible options.--Buyer responsible for all brokerage/duty fees!